﻿using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;

namespace WeShare.WeiXin.Common
{
    public class AESUtil
    {
        /// <summary>
        ///加密
        /// </summary>
        /// <param name="encryptStr"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string Encrypt(string encryptStr, string key)

        {

            byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);

            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(encryptStr);

            RijndaelManaged rDel = new RijndaelManaged();

            rDel.Key = keyArray;

            rDel.Mode = CipherMode.ECB;

            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateEncryptor();

            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Convert.ToBase64String(resultArray, 0, resultArray.Length);

        }
        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="decryptStr"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string Decrypt(string decryptStr, string key)
        {
            byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);

            byte[] toEncryptArray = Convert.FromBase64String(decryptStr);

            RijndaelManaged rDel = new RijndaelManaged();

            rDel.Key = keyArray;

            rDel.Mode = CipherMode.ECB;

            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateDecryptor();

            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return UTF8Encoding.UTF8.GetString(resultArray);

        }
    }
}
